*{
  margin: 0px;
}
/*居中对齐*/
.justify-content-center{
  display:flex;
  justify-content:center;
}
/*居左对齐*/
.justify-content-start{
  display:flex;
  justify-content:flex-start;
}
/*居右对齐*/
.justify-content-end{
  display:flex;
  justify-content:flex-end;
}
/*两端对齐*/
.justify-content-between{
  display:flex;
  justify-content:space-between;
}
/*上下居中*/
.align-items-center{
  display:flex;
  align-items: center;
}
/*下对齐*/
.align-items-end{
  display:flex;
  align-items: flex-end;
}
/*多行溢出*/
.many-over-five{
  display: -webkit-box;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  /*//最多显示行数-两行（5）*/
  -webkit-line-clamp: 5;
  overflow: hidden;
}
/*多行溢出*/
.many-over-two{
  display: -webkit-box;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  /*//最多显示行数-两行（2）*/
  -webkit-line-clamp: 2;
  overflow: hidden;
}
/*单行溢出显示三个点表示溢出部分：*/
.single-over{
  /*//多余的隐藏*/
  overflow:hidden;
  /*//不换行*/
  white-space:nowrap;
  /*//溢出的文本：ellipsis用三个点表示*/
  text-overflow:ellipsis;
}
/*中间页面布局*/
/*.middle-layout{*/
/*  width: 900px;*/
/*  height:900px;*/
/*  margin-left: 50px;*/
/*  position: relative;*/
/*  top: -25px;*/
/*}*/
/*标题布局*/
.headline-layout{
  background-color: rgb(49,68,82);
  height: 100px;
}
/*标题布局中的文字*/
.headline-layout-text{
  color: white;
  text-align: right;
  font-size: 20px;
  margin-right: 30px;
}
/*子导航*/
.subnav{
  color: rgb(10,204,206);
  margin: 40px 0px 15px 0px;
}
/*选择器*/
.selector{
  margin: 20px 0px 20px 15px;
}
.selector>div{
  width: 70px;
  height: 30px;
  background-color: black;
  color: white;
  line-height: 30px;
  text-align: center;
  padding: 0px 10px 0px 0px;
  cursor: pointer;
}
.selector>div:hover{
  background-color: rgb(10,204,206);
}
/*测试边框*/
.border{
  border: 1px solid red;
}
/*日历*/
.calendar{
  width: 50px;
  height: 50px;
  background-color: red;
  margin: 10px;
}
.calendar>div:nth-child(1){
  text-align: center;
  color: white;
}
.calendar>div:nth-child(1)>div:nth-child(1){
  margin-top: 5px;
}
.calendar>div:nth-child(1)>div:nth-child(2){
  font-size: 5px;
}
/*分页*/
.page{
  margin-left: 50px;
  width: 900px;
  /*border: 1px solid red;*/
}
.page>div{
  margin: 10px;
  padding: 10px;
  border: 1px solid gray;
}
.page>div:nth-child(3){
  border: none;
}
